Add tests

Author: rameel

src/Ramstack.ExpressionParser/ExpressionBuilder.Helpers.cs

@@ -117,10 +117,8 @@ private static Expression ApplyBinaryExpression(Identifier op, Func<Expression,
         if (enumUnderlyingType is not null)
         {
             if (lhs.Type != rhs.Type)
-            {
                 if (lhs.Type.IsEnum ? enumUnderlyingType != rhs.Type : enumUnderlyingType != lhs.Type)
                     Error.NonApplicableBinaryOperator(op, lhs.Type, rhs.Type);
-            }
 
             if (lhs.Type.IsEnum)
                 lhs = Expression.Convert(lhs, enumUnderlyingType);

tests/Rmastack.ExpressionParser.Tests/Data/Errors.txt

@@ -84,3 +84,6 @@ Ambiguous match found:\n    Char Chars [Int32] (in System.String)
 
 "test"["a"]
 Ambiguous match found:\n    Char Chars [Int32] (in System.String)
+
+StringSplitOptions.None | StringComparison.Ordinal
+Operator '|' cannot be applied to operands of type 'System.StringSplitOptions' and 'System.StringComparison'.

tests/Rmastack.ExpressionParser.Tests/Data/Expressions.txt

@@ -187,6 +187,9 @@ IIF(((10 == 10) OrElse (20 == 20)), IIF((1 > 0), 10, 20), IIF((0 < 1), 30, 40))
 StringSplitOptions.None & ~StringSplitOptions.RemoveEmptyEntries
 Convert((Convert(StringSplitOptions.None, Int32) & Convert(Convert(~(Convert(StringSplitOptions.RemoveEmptyEntries, Int32)), StringSplitOptions), Int32)), StringSplitOptions)
 
+StringSplitOptions.None | StringSplitOptions.RemoveEmptyEntries
+Convert((Convert(StringSplitOptions.None, Int32) | Convert(StringSplitOptions.RemoveEmptyEntries, Int32)), StringSplitOptions)
+
 ~StringSplitOptions.RemoveEmptyEntries
 Convert(~(Convert(StringSplitOptions.RemoveEmptyEntries, Int32)), StringSplitOptions)